Synopsis

Description

The owner of a foreign server can drop user mappings for that
server for any user. Also, a user can drop a user mapping for his
own user name if USAGE privilege on the
server has been granted to the user.

Parameters

IF EXISTS

Do not throw an error if the user mapping does not
exist. A notice is issued in this case.

user_name

User name of the mapping. CURRENT_USER and USER match the name of the current user.
PUBLIC is used to match all
present and future user names in the system.

server_name

Server name of the user mapping.

Examples

Drop a user mapping bob, server
foo if it exists:

DROP USER MAPPING IF EXISTS FOR bob SERVER foo;

Compatibility

DROP USER MAPPING conforms to ISO/IEC
9075-9 (SQL/MED). The IF EXISTS clause
is a PostgreSQL extension.